Results 41 to 50 of about 252,570 (105)

Calidad del agua en el manejo post captura de Potamotrygon motoro "raya motoro" (Pisces: Potamotrygonidae) en el acuario comercial "Amazon Tropicals Aquarium" de la ciudad de Iquitos - Perú [PDF]

, 2016
El estudio se realizó entre los meses de abril y setiembre de 2015, en las instalaciones del acuario comercial “Amazon Tropicals Aquarium E.I.R.L.”, ubicado en el distrito de San Juan Bautista de la Región Loreto; el trabajo experimental tuvo un periodo ...
Ruíz Peña, Junior Miguel, Flores Pérez, Miguel Angel   +1 more
core  

Descriptions of two new freshwater Neotropical species of Rhinebothrium (Cestoda: Rhinebothriidea) from Potamotrygon motoro (Chondrichthyes: Potamotrygonidae) [PDF]

, 2011
Two new species of Rhinebothrium (Cestoda, Rhinebothriidea) from potamotrygonid stingrays in the Neotropical region are herein described, which raises the total number of Rhinebothrium species known from Neotropical freshwaters to five.
Ivanov, V.A., Menoret, A.
core   +2 more sources

Isolation of a zoonotic pathogen Aeromonas hydrophila from freshwater stingray (Potamotrygon motoro) kept in a Korean aquarium with ricefish (Oryzias latipes)

, 2017
In the present study, Aeromonas (A.) hydrophila was isolated from a captive-bred adult freshwater stingray (Potamotrygon motoro) reared at a commercial aquarium in Korea.
Kim, Sang Wha, Jun, Jin Woo, Hyoun Joong Kim, Kim, Sang Guen, Park, Se Chang, Yun, Saekil, Giri, Sib Sankar, Kim, Hyoun Joong, Sib Sankar Giri, Chi, Cheng, Sang Guen Kim, Lee, Young-Ran, Saekil Yun, Cheng Chi, Jin Woo Jun, Se Chang Park, Young-Ran Lee, Sang Wha Kim   +17 more
core   +1 more source

Rhythmic chew cycles with distinct fast and slow phases are ancestral to gnathostomes. [PDF]

Philos Trans R Soc Lond B Biol Sci, 2023
Richard BA, Spence M, Rull-Garza M, Roba YT, Schwarz D, Ramsay JB, Laurence-Chasen JD, Ross CF, Konow N.   +8 more
europepmc   +1 more source

Spatial memory and orientation strategies in the elasmobranch Potamotrygon motoro

, 2005
We investigated whether juvenile freshwater stingrays (Potamotrygon motoro) can solve spatial tasks by constructing a cognitive map of their environment. Two experimental conditions were run: allocentric and ego-allocentric.
Schluessel, Vera, Bleckmann, Horst
core   +1 more source

Biometria e dimorfismo sexual de Argulus juparanaensis (Argulidae), um parasito de Potamotrygon motoro (Potamotrygonidae). [PDF]

, 2018
Argulus juparanaensis é encontrado parasitando Potamotrygon motoro da bacia do Rio Amazonas, e parece ter forte relação com esse hospedeiro. O gênero Potamotrygon abriga 21 espécies, indivíduos adaptados à água doce, mas algumas espécies suportam ...
TAVARES-DIAS, M., BORGES, W. F., SILVA, P. H. E. da, OLIVEIRA, M. S. B.   +3 more
core  

Fig. 6 in Karyotype description and evidence of multiple sex chromosome system X X X X /X X Y in Potamotrygon aff. motoro and P. falkneri (Chondrichthyes: Potamotrygonidae) in the upper Paraná River basin, Brazil

, 2011
Fig. 6. Somatic metaphases of Potamotrygon aff. motoro, the population of Porto Rico (a), population of Ilha Solteira (b), identification of constitutive heterochromatin. Metaphases of Potamotrygon falkneri sample from Porto Rico (c) and Ilha Solteira (d)
Oliveira, Claudio, Shimabukuro-Dias, Cristiane Kioko, Cruz, Vanessa Paes da, Foresti, Fausto   +3 more
core   +1 more source

A histology-based study in apparently healthy wild freshwater stingrays Potamotrygon motoro

, 2016
Histopathological studies are important as a reference in pathological process. There are a few of these studies in elasmobranchs. The aim of this study was to describe the histology of kidney, spleen, liver, and gills of wild apparently healthy ...
Viadanna, Pedro de Oliveira, de Moraes, Flávio Ruas [UNESP], Yunis Aguinaga, Jefferson, de Moraes, Julieta Engrácia [UNESP], Viadanna, Pedro de Oliveira [UNESP], Yunis Aguinaga, Jefferson [UNESP], de Moraes, Flávio Ruas, de Moraes, Julieta Engrácia   +7 more
core   +1 more source

Hábitos alimentares e sobreposição trófica das raias Potamotrygon falkneri e Potamotrygon motoro (Chondrichthyes, Potamotrygonidae) na planície alagável do alto rio Paraná, Brasil = Feeding habitats and trophic overlap of the freshwater stingrays Potamotrygon falkneri e Potamotrygon motoro (Chondrichthyes, Potamotrygonidae) in the upper Paraná river floodplain, Brazil

, 2006
As raias Potamotrygon falkneri e Potamotrygon motoro foram avaliadas em relação à composição de suas dietas e a sobreposição do nicho trófico nos períodos de seca (agosto/2004) e cheia (janeiro/2005) na planície alagável do alto rio Paraná, em três ...
Erivelto Goulart, Edson Fontes de Oliveira, Alessandra Pasian Lonardoni, Milza Celi Fedatto Abelha   +3 more
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First identification of interspecies hybridization in the freshwater stingrays Potamotrygon motoro and P-falkneri (Myliobatiformes, Potamotrygonidae)

, 2015
The stingrays Potamotrygon motoro and P. falkneri occurred in sympatry in the Paraguay, Lower and Middle Parana River, and belong to distinct ecomorphological groups.
Cruz, V. P. [UNESP], Mendonça, F. F. [UNESP], Foresti, F., Pardo, B. G., Martinez, P., Oliveira, C. [UNESP], Oliveira, C., Vera, M., Foresti, F. [UNESP], Cruz, V. P., Mendonça, F. F.   +10 more
core   +1 more source